Lucene3x codec error after upgrade from AEM 6.0 or 6.1 to 6.4 or later | AEM 6.x

Issue

After upgrading from AEM 6.0 or 6.1 to AEM 6.3 or 6.4 version, the following error appears in the logs.

22.05.2018 16:48:19.289 *WARN* [async-index-update-async] org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexEditor Failed to index the node [/home/users/a/admin/.tokens/2018-05-22T16.11.10.600-05.00]
java.lang.IllegalArgumentException: A SPI class of type org.apache.lucene.codecs.Codec with name 'Lucene3x' does not exist. You need to add the corresponding JAR file supporting this SPI to your classpath.The current classpath supports the following names: [Lucene40, Lucene41, Lucene42, Lucene45, Lucene46, oakCodec]
at org.apache.lucene.util.NamedSPILoader.lookup(NamedSPILoader.java:109)
at org.apache.lucene.codecs.Codec.forName(Codec.java:95)
at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:370)
at org.apache.lucene.index.SegmentInfos$1.doBody(SegmentInfos.java:404)
at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:843)
at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:694)
at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:400)
at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:746)
at org.apache.jackrabbit.oak.plugins.index.lucene.writer.DefaultIndexWriter.getWriter(DefaultIndexWriter.java:164)
at org.apache.jackrabbit.oak.plugins.index.lucene.writer.DefaultIndexWriter.updateDocument(DefaultIndexWriter.java:92)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexEditor.addOrUpdate(LuceneIndexEditor.java:250)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexEditor.leave(LuceneIndexEditor.java:140)
at org.apache.jackrabbit.oak.spi.commit.CompositeEditor.leave(CompositeEditor.java:74)
at org.apache.jackrabbit.oak.spi.commit.VisibleEditor.leave(VisibleEditor.java:63)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeAdded(EditorDiff.java:130)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:500)
at org.apache.jackrabbit.oak.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:608)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
at org.apache.jackrabbit.oak.segment.MapRecord$2.childNodeChanged(MapRecord.java:401)
at org.apache.jackrabbit.oak.segment.MapRecord$3.childNodeChanged(MapRecord.java:442)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:490)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:433)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:391)
at org.apache.jackrabbit.oak.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:608)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
at org.apache.jackrabbit.oak.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:555)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
at org.apache.jackrabbit.oak.segment.MapRecord$2.childNodeChanged(MapRecord.java:401)
at org.apache.jackrabbit.oak.segment.MapRecord$3.childNodeChanged(MapRecord.java:442)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:490)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:433)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:391)
at org.apache.jackrabbit.oak.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:608)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:415)
at org.apache.jackrabbit.oak.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:608)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.childNodeChanged(EditorDiff.java:148)
at org.apache.jackrabbit.oak.segment.MapRecord$2.childNodeChanged(MapRecord.java:401)
at org.apache.jackrabbit.oak.segment.MapRecord$3.childNodeChanged(MapRecord.java:442)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:490)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:433)
at org.apache.jackrabbit.oak.segment.MapRecord.compare(MapRecord.java:391)
at org.apache.jackrabbit.oak.segment.SegmentNodeState.compareAgainstBaseState(SegmentNodeState.java:608)
at org.apache.jackrabbit.oak.spi.commit.EditorDiff.process(EditorDiff.java:52)
at org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.updateIndex(AsyncIndexUpdate.java:695)
at org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.runWhenPermitted(AsyncIndexUpdate.java:543)
at org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate.run(AsyncIndexUpdate.java:402)
at org.apache.sling.commons.scheduler.impl.QuartzJobExecutor.execute(QuartzJobExecutor.java:118)
at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

Environment

AEM 6.0 or 6.1 upgrade to 6.3 or 6.4

Cause

The AEM upgrade does not update the index definition automatically.

Resolution

Go to http://aem-host:port/crx/de/index.jsp and log in as the admin user.

Delete /oak: index/lucene index.

Restart AEM.

Monitor the logs for indexing of the new /oak: index/lucene index.

Note:

Indexing does not take many hours. However, it is required for the successful upgrade.

** Thanks to Charu Jain for assisting Adobe in identifying this product issue.

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